8.7
High
CVE-2026-16158 Impact: @fastify/reply-from versions from 8.3.1 up to but not including 12.6.4 build the internal URL cache key by…
Description
Impact: @fastify/reply-from versions from 8.3.1 up to but not including 12.6.4 build the internal URL cache key by concatenating the destination and source path without a delimiter. Different destination and source pairs can therefore produce the same key while resolving to different upstream URLs. When getUpstream selects an upstream from request data, a URL cached for one upstream can be reused for a request intended for another upstream, causing cross-upstream data access and modification. The default configuration is affected. Setting disableCache to true prevents the behavior. Patches: upgrade to @fastify/reply-from 12.6.4. Workarounds: pass disableCache: true when registering the plugin.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| @fastify/reply-from 12.6 | earliest → < 12.6.4 | 12.6.4 |
| @fastify/reply-from 8.3 | 8.3.1 → < 12.6.4 | 12.6.4 |
References
- github.com github.com
- cna.openjsf.org cna.openjsf.org
Timeline
- Published
- Last modified
Other CVEs of @fastify/reply-from
The 4 CVEs of @fastify/reply-from →
CVE-2026-117518
@fastify/reply-from is a Fastify plugin that forwards requests to an upstream HTTP server
8.2
High
CVE-2026-107318
@fastify/reply-from is a Fastify plugin that forwards requests to an upstream HTTP or HTTPS server
7.4
High
CVE-2026-33805
@fastify/reply-from v12.6.1 and earlier and @fastify/http-proxy v11.4.3 and earlier process the client's Connection…
9.0
Critical